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powerpc/rtas: remove rtas_ibm_suspend_me_unsafe()

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rtas_ibm_suspend_me_unsafe() is now unused; remove it and
rtas_percpu_suspend_me() which becomes unused as a result.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201207215200.1785968-17-nathanl@linux.ibm.com
This commit is contained in:
Nathan Lynch 2020-12-07 15:51:48 -06:00 committed by Michael Ellerman
parent 4d756894ba
commit 5f6665e400
2 changed files with 1 additions and 67 deletions
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1
arch/powerpc/include/asm/rtas.h
View File

@ -258,7 +258,6 @@ extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
extern void rtas_progress(char *s, unsigned short hex);
extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
int rtas_ibm_suspend_me_unsafe(u64 handle);
int rtas_ibm_suspend_me(int *fw_status);
struct rtc_time;

67
arch/powerpc/kernel/rtas.c
View File

@ -925,66 +925,6 @@ int rtas_suspend_cpu(struct rtas_suspend_me_data *data)
return __rtas_suspend_cpu(data, 0);
}
static void rtas_percpu_suspend_me(void *info)
{
__rtas_suspend_cpu((struct rtas_suspend_me_data *)info, 1);
}
int rtas_ibm_suspend_me_unsafe(u64 handle)
{
long state;
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
struct rtas_suspend_me_data data;
DECLARE_COMPLETION_ONSTACK(done);
if (!rtas_service_present("ibm,suspend-me"))
return -ENOSYS;
/* Make sure the state is valid */
rc = plpar_hcall(H_VASI_STATE, retbuf, handle);
state = retbuf[0];
if (rc) {
printk(KERN_ERR "rtas_ibm_suspend_me: vasi_state returned %ld\n",rc);
return rc;
} else if (state == H_VASI_ENABLED) {
return -EAGAIN;
} else if (state != H_VASI_SUSPENDING) {
printk(KERN_ERR "rtas_ibm_suspend_me: vasi_state returned state %ld\n",
state);
return -EIO;
}
atomic_set(&data.working, 0);
atomic_set(&data.done, 0);
atomic_set(&data.error, 0);
data.token = rtas_token("ibm,suspend-me");
data.complete = &done;
lock_device_hotplug();
cpu_hotplug_disable();
/* Call function on all CPUs. One of us will make the
* rtas call
*/
on_each_cpu(rtas_percpu_suspend_me, &data, 0);
wait_for_completion(&done);
if (atomic_read(&data.error) != 0)
printk(KERN_ERR "Error doing global join\n");
cpu_hotplug_enable();
unlock_device_hotplug();
return atomic_read(&data.error);
}
/**
* rtas_call_reentrant() - Used for reentrant rtas calls
* @token: Token for desired reentrant RTAS call
@ -1035,12 +975,7 @@ int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...)
return ret;
}
#else /* CONFIG_PPC_PSERIES */
int rtas_ibm_suspend_me_unsafe(u64 handle)
{
return -ENOSYS;
}
#endif
#endif /* CONFIG_PPC_PSERIES */
/**
* Find a specific pseries error log in an RTAS extended event log.